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U.S. Army Corps of Engineers Beach Projects

The U.S. Army Corps of Engineers controls various beach projects on the Isle of Palms which the City does not manage.

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Projects

Sediment Rehandling Project - Ahtna

The Sediment Rehandling Project is a beneficial use project, meaning it reuses material that would otherwise be wasted or disposed of.

The U.S. Army Corps of Engineers (USACE) is rehandling sediment from four existing placement areas to make room for future Atlantic Intracoastal Waterway dredging. Using that sand for beach renourishment puts it to productive use instead of dumping it.

The project is funded in part through routine Atlantic Intracoastal Waterway operations and maintenance funds, along with support from the Bipartisan Infrastructure Law.

In short, this approach maximizes existing federal dollars while providing shoreline protection, rather than wasting usable material.

Intracoastal Waterway Dredging at Breach Inlet - Cottrell

U.S. Army Corps of Engineers (USACE) contractor, Cottrell, will begin placing sand on the Isle of Palms late January 2026.

The project comes at no cost to the Isle of Palms, as it is fully funded through federal maintenance of the Intracoastal Waterway. This dredging would occur regardless of whether the Island accepted the sand. 

USACE has been dredging multiple shoals in the Intracoastal Waterway near the Isle of Palms, from Dewees Inlet to Breach Inlet. One of these shoals in Breach Inlet is the source of the sand designated for beach placement on the Isle of Palms.

Cottrell will dredge this shoal and place 265,000 CY of sand directly onto the Isle of Palms between 6th and 9th Ave. Beach placement is projected to begin in late January 2026 and continue through March 2026, coinciding with the ongoing Sediment Rehandling Project managed by Ahtna.

Funding

The U.S. Army Corps of Engineers (USACE) projects are funded in part by the Bipartisan Infrastructure Law (BIL) as well as regular funding for Atlantic Intracoastal Waterway Operations & Maintenance.

Updates

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02/04/2026 - Cottrell is currently working between 6th and 7th Avenues and is projected to complete its project by March 9. Cottrell’s work is expected to be finished before Ahtna’s project concludes.
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02/04/2026 - Ahtna has been offline for the past few days due to an issue with a booster pump. Once the issue is resolved, crews will resume pumping operations around 4th Avenue. The USACE estimates approximately 175,000 cubic yards of material remain, with the current pumping rate ranging between 6,000 and 7,000 cubic yards per 24-hour period. Ahtna is expected to continue working into March.
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01/23/2026 - Ahtna continues to make progress, with production rates improved compared to earlier phases of the project. Fewer than 200,000 cubic yards of sand remain to be placed, and they are dredging from their final designated borrow area. To accommodate the upcoming Cottrell beach restoration project who will be operating in the vicinity, Ahtna is shifting its operations to an area south of...
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1/23/2026 - Cottrell Contracting will begin dredging a shoal at Breach Inlet and placing sand on the Isle of Palms beach in the coming days. Cottrell completed dredging all previously identified shoals within the Atlantic Intracoastal Waterway on January 23 and is now mobilizing to dredge the Breach Inlet shoal designated for placement on Isle of Palms. Sand placement is planned for the area...
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1/14/2026 - U.S. Army Corps of Engineers (USACE) contractor, Cottrell, will begin placing sand on the Isle of Palms within the next 2 weeks. The USACE has been dredging multiple shoals around the Island, from Dewees to Breech Inlet, and disposing of the sand in an open water placement area. One of those shoals near Breach Inlet is the source of the sand designated for beach placement on the Isle...
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01/12/2026 - Ahtna has begun 24/7 operation to minimize overall project duration and will have a presence on the beach at night.
Ahtna announcement
1/6/2026 - Ahtna continues its sediment rehandling project, placing sand between 5th and 6th Avenues and periodically moving north up the beach. The current condition of the area between 2nd and 5th Avenue is better than at any point in the past two years, with nearly 100 ft of dry-sand seaward of the dune line. Ahtna is completing rehandling from its first containment cell and is beginning work...
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12/16/2025 - Ahtna continues to make steady progress placing sand along the beach and is preparing to transition to 24/7 operations, pending an increase in crew size. The U.S. Army Corps of Engineers projects a mid-March 2026 completion date, which aligns with Cottrell’s project timeline. Both contractors appear prepared to coordinate their efforts to avoid conflicts between their respective beach...
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12/16/2025 Cottrell is currently dredging the Dewees Inlet Shoal within the Atlantic Intracoastal Waterway, with material being placed in an open-water placement area. This phase of work is expected to be completed by the end of the week (~December 21, 2025). Beginning next week (~December 22, 2025), Cottrell will shift operations to dredge a shoal identified as “1B” in Breach Inlet, with material...
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12/8/2025- The U.S. Army Corps of Engineers (USACE) has contracted Cottrell to dredge the Atlantic Intercoastal Waterway (AIWW) in vicinity of a shoal in breach inlet and place the sand along the Isle of Palms beach between 6th and 9th Avenues. The USACE anticipates Cotrell to begin as early as January 2026 with 24/7 operation. The original engineering plans state Cottrell will be on site for 32...
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12/8/2025- The U.S. Army Corps of Engineers (USACE) has contracted Ahtna to manage the 'Sediment Rehandling at Breach Inlet' project. Ahtna will be taking sand from four placement areas along the intercoastal waterway, and placing it along the Isle of Palms Beach from the Sea Cabin Villas area south to Breach Inlet. This will restore needed capacity for future dredging projects. As of this week...